<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vuejs/vue.js"></script>
</head>
<body>
    <div id="app">
        <parent></parent>
    </div>
    <template id="child">
        <div>
            <button @click="click">Send</button>
            <input type="text" v-model="message"/>
        </div>
    </template>
    <script>
        Vue.component('parent',{
            template : '<div><child @childFn="transContent"></child>子组件传过来的值是:{{message}}</div>',
            data : function(){
                return { message:'' }
            },
            methods : {
                transContent(payload){
                    this.message = payload;
                }
            }
        });
        Vue.component('child',{
            template:'#child',
            data : function(){
                return { 
                    message : '子组件的消息' 
                }
            },
            methods : {
                click() {
                    this.$emit('childFn',this.message);
                }
            }
        });
        var vm = new Vue({ el: '#app'})
    </script>
</body>
</html>